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Chapter 8 Optical Spectrum Measurement
Trace display functions
Cursors information
The informations on Cursors are always display on the upper part of the screen.
Above the trace are shown the co-ordinates of the points of intersection of the cursors
A and B with the trace, together with the distance between the two points.
Cursor X and Y
Two types of cursors can be defined:
•
Cursor X: only a vertical bar is present.
•
Cursor X and Cursor Y: there is a vertical bar and a horizontal bar. The intersec-
tion between these two bars is placed on the trace.
To display the type of cursor selected:
1
Click on Advanced.
2
Select the key
Each click on this key will alternatively insert or delete the check mark against
Cursor Y
Full scale
To display the entire trace, with no zoom or displacement:
1
Either press the
or,
With
Trace
Shift function
The Shift function is used to displace the displayed section of the trace by pressing the
direction keys.
The horizontal shift is performed maintaining the point of intersection between the trace
and the selected cursor at the same level, scrolling the trace horizontally while following
it vertically, so that it never goes off the screen.
To use this function:
1
Select the zoom factor as described above.
2
Choose cursor and cursor position.
3
On the
264
CursorX/CursorY
Full Scale
selected on Trace/Channel, press validation key
Zoom/Shift
key, select Shift.
User Manual
to modify the current choice.
key
78000010220 Rev. 024
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